So I managed to resurrect the Espruino board with serialflash.
However I didn't have much luck so far with the current master. I tried using 3.3V as well as with level shifters to 5V (according to the shield spec).
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
So I managed to resurrect the Espruino board with serialflash.
However I didn't have much luck so far with the current master. I tried using 3.3V as well as with level shifters to 5V (according to the shield spec).